If i can type 420 words in 8 minutes, what would be the unit rate for time per word

The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)1/n+c what does the graph tell you about the value of n in this function

He concluded that a heavier object dropped from the same height as a lighter object will land

Taking algebra two apex courses and need with these questions